You review the Failed Attempts logs on an AAA server and find： "unknown network access server error."
Which failure could produce this error？（）

单项选择题On a Cisco Aironet 802.11 a b g wireless LAN client adapter， the status LED and activity LED arealternating on and off. What does this indicate？（）

A.The client card has failed.
B.The client card is not associated to the network.
C.The driver has been installed incorrectly.
D.The client card has awakened from power-save mode.

单项选择题ThetagtimeoutvalueforaCiscoWirelessLocationApplianceshouldbesettowhichtagbeaconrate？（）

A.4 to 6 times the tag beaconing rate
B.6 to 8 times the tag beaconing rate
C.8 to 10 times the tag beaconing rate
D.10 to 12 times the tab beaconing rate

单项选择题On a Cisco Aironet 1240AG Series standalone access point， the radio LED is dark blue and blinking， butthe status LED and Ethernet LED are both off. What does this indicate？（）

A.A firmware upgrade is in progress.
B.An access point buffer overflow is occurring.
C.The internal radio has failed.
D.The access point is booting.

单项选择题The IOS of a North American Cisco Aironet 1130AG Series standalone access point has become corrupt.You must therefore reload the TFTP firmware. Before you press and hold the MODE button，you shouldverify that the file name is which of the following？（）

A.c1130-k9w7-tar.boot
B.c1130-k9w7-tar.default
C.c1130-k9w7-tar.recover
D.c1130-k9w7-tar.123-7.JA1.tar

单项选择题You are using ADU and are authenticated and associated to an access point. However， you are unable toobtain an IP address. Which of these has caused this problem？（）

A.invalid SSID
B.invalid 802.1X authentication type
C.invalid encryption type
D.invalid WEP key